earth is just one example and i think it would be cool to see how bizarre life on other planets could be or if a species on one evolved to be surprisingly similar to one on earth. a new planet would also have new natural foods and ingredients like fruits that we could use to invent new delicious foods and mix with our own food. life on earth used to be very different ages ago ruled by dinosaurs on land rather than mammals. how cool would it be to find a dinosaurian-like planet with huge land life like the t rex. also if we found a new life supporting planet we could leave earth for it since earth is dying to climate change, but this would be hard because of diseases to us and aliens. finding a new life planet would be scary because of deadly diseases that if brought to earth could become invasive and overtake everything.